package com.engine.common.util;

import lombok.SneakyThrows;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;

import javax.net.ssl.*;
import java.security.cert.CertificateException;

/**
 * @author FY
 * @version 1.0.0
 * @ClassName RestTemplateUtil.java
 * @Description TODO
 * @createTime 2021年12月13日
 */
public class RestTemplateUtil {

    @SneakyThrows
    public static HttpComponentsClientHttpRequestFactory GetHttpFactory()
    {
        HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory();
        // 超时
        factory.setConnectTimeout(5000);
        factory.setReadTimeout(5000);
        SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(createIgnoreVerifySSL(),
                // 指定TLS版本
                null,
                // 指定算法
                null,
                // 取消域名验证
                new HostnameVerifier() {
                    @Override
                    public boolean verify(String string, SSLSession ssls) {
                        return true;
                    }
                });
        CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(sslsf).build();
        factory.setHttpClient(httpClient);
        return factory;
    }

    /**
     * 跳过证书效验的sslcontext
     *
     * @return
     * @throws Exception
     */
    private static SSLContext createIgnoreVerifySSL() throws Exception {
        SSLContext sc = SSLContext.getInstance("TLS");

        // 实现一个X509TrustManager接口，用于绕过验证，不用修改里面的方法
        X509TrustManager trustManager = new X509TrustManager() {
            @Override
            public void checkClientTrusted(java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
                                           String paramString) throws CertificateException {
            }

            @Override
            public void checkServerTrusted(java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
                                           String paramString) throws CertificateException {
            }

            @Override
            public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                return null;
            }
        };
        sc.init(null, new TrustManager[]{trustManager}, null);
        return sc;

    }

}
